# Fixed Timestamps for Reproduceibility ### Bazel[^1] ```c static const u4 kDefaultTimestamp = 30 << 25 | 1 << 21 | 1 << 16; // January 1, 2010 in DOS time ``` [^1]: https://github.com/bazelbuild/bazel/blob/92f0d6aace87d0bf1fed8249fe834d07cff733be/third_party/ijar/zip.cc#L78-#L79 ### NPM[^2] ```diff + // Provide a specific date in the 1980s for the benefit of zip, + // which is confounded by files dated at the Unix epoch 0. + mtime: new Date('1985-10-26T08:15:00.000Z'), ``` [^2]: https://github.com/npm/cli/commit/58d2aa58d5f9c4db49f57a5f33952b3106778669#diff-eabad0b45ec780b8b57ae6e3d47fd7d063680bea3acdc6b98a4b45ba3b808ccc ### Debian Packaging ``` 2015-10-21 00:00Z' ```