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npm / moment-timezone

moment-timezone

What changed in moment-timezone 0.6, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-18.

1 breaking4 behavior and defaults4 fixes and other

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moment-timezone 0.69 changes

Breaking changes 1

  • Fixed default date selection when using un-zoned moment() while a default zone is set; this fix requires core moment 2.31.0 or higher.

    0.6.4release notes

Behavior and default changes 4

  • Updated timezone data to IANA TZDB 2026e, which may affect timezone behavior.

    0.6.5release notes

  • Time zone data was updated to IANA TZDB 2026d, which may change time zone offsets and transitions.

    0.6.4release notes

  • Updated timezone data to IANA TZDB 2026c, which may change timezone calculations.

    0.6.3release notes

  • Updated the timezone data to IANA TZDB 2026b, which may change timezone calculations.

    0.6.2release notes

Fixes and other changes 4

  • Fixed calendar arithmetic around time zone gaps.

    0.6.4release notes

  • Fixed default date selection when creating a zoned Moment with only time fields in object inputs.

    0.6.4release notes

  • Fixed default date selection when creating a zoned Moment with only time fields in string inputs.

    0.6.4release notes

  • Updated timezone data to 2026a; recently announced DST changes for British Columbia, Canada are not included and will likely arrive in 2026b.

    0.6.1release notes