| Spider timestamp | Version |
| 2024-03-02 23:27 UTC | ECMAScript 2023 / June 2023 |
| 2021-10-16 16:40 UTC | ECMAScript 2021 / June 2021 |
| 2021-07-27 16:39 UTC | ECMAScript 2021 (12th edition) / June 2021 |
| 2020-07-02 13:49 UTC | ECMAScript 2020 / June 2020 |
| 2019-11-18 00:28 UTC | ECMAScript 2019 / June 2019 |
| 2018-10-07 11:18 UTC | ECMAScript 2018 / June 2018 |
| 2017-12-06 12:19 UTC | ECMAScript 2017 / June 2017 |
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