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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Zenless Zone Zero Version 1.5, titled “Astra-nomical Moment,” went live on January 22, 2025 (UTC+8). Its two featured banner phases were S-Rank Agents Astra Yao and Ellen in Phase 1, followed by Evelyn and Qingyi in Phase 2. This is a historical overview of that update. It is not a guide to what is currently available in the game.
Release date and time zone
The official Zenless Zone Zero channel’s program description for the update states that “Astra-nomical Moment” goes live on January 22, 2025 (UTC+8). Because the date is tied to UTC+8, players in other time zones will see a different local date and hour. A player in UTC-5, for example, would see the update arrive on January 21 in the evening rather than January 22. Regional server timing for other areas was not established by the sources cited here.
Featured banners by phase
Version 1.5 used two featured banner phases. The table below compares them using the featured Agent, attribute, combat specialty, and rerun status. Rerun status is only stated where the official program description names it.
| Phase | S-Rank featured Agents | Attribute and specialty | A-Rank featured Agents | Rerun status |
|---|---|---|---|---|
| Phase 1 | Astra Yao; Ellen | Astra Yao: Ether, Support. Ellen: Ice, Attack. | Anby; Corin | The official program description names Astra Yao and Ellen for Signal Search and rerun events. |
| Phase 2 | Evelyn; Qingyi | Evelyn: Fire, Attack. Qingyi: Electric, Stun. | Anton; Nicole | Not stated in the sources cited here. |
Phase 1: Astra Yao and Ellen
Phase 1 paired Astra Yao, an Ether Support, with Ellen, an Ice Attack Agent. Both are S-Rank. The HoYoLAB recap lists Anby and Corin as the accompanying A-Rank featured Agents for this phase.
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Phase 2 featured Evelyn, a Fire Attack Agent, and Qingyi, an Electric Stun Agent, both S-Rank. The recap lists Anton and Nicole as the accompanying A-Rank featured Agents.
Starloop area and the special episode
The update report from MP1st describes a new area called Starloop. According to that report, Starloop became available after the update and could be unlocked by completing the “Astra-nomical Moment” special episode. The report is a secondary source. The exact steps to reach the episode and any prerequisite story progress were not established by the sources cited here, so check the in-game quest log for the current requirements.
#1 Best Overall
- Amidst this overwhelming catastrophe, New Eridu, the last metropolis that survived the apocalypse, has risen against the odds by harnessing the technology and resources necessary to fight the Hollow disaster, gradually evolving into human civilization's last beacon of hope.
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Events and login rewards
The same update report lists two Agent event types for Astra Yao and Evelyn:
- Trust Events for Astra Yao and Evelyn.
- Quality Time Events for Astra Yao and Evelyn.
The report also lists a login event called “Brilliant Overture,” which reportedly offered 10 Encrypted Master Tapes for logging in on seven days. This reward figure comes from that secondary report and was not confirmed against the official update page. Each event’s start and end dates, and whether the seven-day login window was a one-time allowance, are not established by the sources cited here.
Rank #2
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What the sources do and do not establish
The facts in this article rest on three sources: the official program description from the Zenless Zone Zero channel, a HoYoLAB recap that gives the two-phase featured roster, and the MP1st update report that describes the new story, area and event additions. The official HoYoverse Version 1.5 update page exists, but its full text could not be checked against this article, so any detail that appears only in the secondary reports should be treated as reported rather than officially confirmed.
Quick Recap
Rank #4
Rank #3
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- Confirmed by the official program description: the title, the January 22, 2025 (UTC+8) launch, and the naming of Astra Yao and Ellen for Signal Search and rerun events.
- Supported by the HoYoLAB recap: the Phase 1 and Phase 2 featured rosters and their accompanying A-Rank Agents.
- Reported by the MP1st update report: Starloop and its unlock condition, the Trust and Quality Time events, and the seven-day login reward.
- Not established by these sources: exact event schedules, reward quantities beyond the one reported above, gameplay adjustments, and any differences between platforms or regions.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.




