diff --git a/README.md b/README.md
index 480ba47..2001f63 100644
--- a/README.md
+++ b/README.md
@@ -17,10 +17,11 @@ This is created as a workaround (just in ICS rather than RSS) for personal use a
 The results should be similar to the one you would see in [this release query on VNDB](https://vndb.org/r?f=0672171_4YsVe132gja2wzh_dHans-2wzh_dHant-N48721gwcomplete-N480281UJ81Xkx), except that I expand the release window 14 days earlier to avoid missing VNs.
 
 To customize the query, run the script with optional parameters:
-- `python vndb-calendar.py -f {customized_compact_filter} -p {max_page}`
-- Example of generic filters for en & ja releases: `python vndb-calendar.py -f "0572171_4YsVe122gen2gjaN48721gwcomplete-"`
+- `python vndb-calendar.py -f {customized_compact_filter} -p {max_page} -t {shift_time}`
+- Example of generic filters for en & ja upcoming releases: `python vndb-calendar.py -f "0572171_4YsVe122gen2gjaN48721gwcomplete-" -t 0`
 - `-f` or `--filter`: your custom [compact filters](https://api.vndb.org/kana#filters), by default it would use my personalized one
 - `-p` or `--max-page`: maximum pages of query results, by default it will be `2`
+- `-t` or `--shift-time`: show *new* releases X days ago, it's really upcoming release if set to `0`, by default it will be `14`
 
 ## Todo
 
diff --git a/README_zh-Hans.md b/README_zh-Hans.md
index 95c461a..b2f2f39 100644
--- a/README_zh-Hans.md
+++ b/README_zh-Hans.md
@@ -22,6 +22,7 @@ VNDB 目前只对 *Recent Changes* 提供 RSS，*Upcoming Releases* 和 *Just Re
 - 以中日视觉小说为例：`python vndb-calendar.py -f "0572171_4YsVe132gja2wzh_dHans-2wzh_dHant-N48721gwcomplete-"`
 - `-f` 或 `--filter`：自定义 [compact filters](https://api.vndb.org/kana#filters)，默认为我高度自定义的个人方案
 - `-p` 或 `--max-page`：搜索结果的最大页数，默认为 `2`
+- `-t` 或 `--shift-time`：显示 X 天前发售到尚未发售的视觉小说，设置为 `0` 才是真正的「即将发售作品」，默认为 `14`
 
 ## Todo
 
diff --git a/vndb-calendar.py b/vndb-calendar.py
index 7d133c4..6267635 100644
--- a/vndb-calendar.py
+++ b/vndb-calendar.py
@@ -159,6 +159,14 @@
     default=2,
     help="max pages of query results",
 )
+parser.add_argument(
+    "-t",
+    "--shift-time",
+    type=int,
+    required=False,
+    default=None,
+    help='show "new" releases X days ago, it\'s really upcoming release if set to 0',
+)
 args = parser.parse_args()
 
 
@@ -172,7 +180,13 @@ def get_page(max_page, data):
 
     for page in range(1, max_page + 1):
         data["page"] = page
-        data["filters"] = args.filter
+        if args.shift_time:
+            _SHIFT_TIME_NEW = (
+                datetime.now() - timedelta(days=args.shift_time)
+            ).strftime("%Y-%m-%d")
+            data["filters"] = args.filter.replace(_SHIFT_TIME, _SHIFT_TIME_NEW)
+        else:
+            data["filters"] = args.filter
         response = requests.post(api_url, data=json.dumps(data), headers=headers)
 
         if response.status_code == 200: